公开(公告)号：US12068886B2

公开(公告)日：2024-08-20

申请号：US17817775

申请日：2022-08-05

Applicant: Cisco Technology, Inc.

Inventor： Changhong Shen ,  Ruozhong Xuan ,  Sampath Kumar Sthothra Bhasham ,  Vincent Li

IPC: H04L12/46 ,  H04L45/74 ,  H04L61/251 ,  H04L61/5014 ,  H04L67/141

CPC classification number: H04L12/4633 ,  H04L45/74 ,  H04L61/251 ,  H04L61/5014 ,  H04L67/141

Abstract: In one embodiment, a method includes acquiring an Internet Protocol version 6 (IPv6) address for a physical interface of a first network element. The method also includes configuring an Internet Protocol version 4 (IPv4) over IPv6 tunnel between the first network element and a second network element using the physical interface of the first network element. The method also includes acquiring an updated IPv6 address for the physical interface of the first network element and using an IPv6 Service Level Agreement (SLA) Hypertext Transfer Protocol (HTTP) operation to notify the second network element of the updated IPv6 address to establish a bidirectional IPv4 over IPv6 tunnel. The method further includes establishing a control connection with an IPv4 SD-WAN controller and automatically building an SD-WAN overlay tunnel with the bidirectional IPv4 over IPv6 tunnel as a transport.

公开(公告)号：US20230336376A1

公开(公告)日：2023-10-19

申请号：US17817775

申请日：2022-08-05

Applicant: Cisco Technology, Inc.

Inventor： Changhong Shen ,  Ruozhong Xuan ,  Sampath Kumar Sthothra Bhasham ,  Vincent Li

IPC: H04L12/46 ,  H04L67/141 ,  H04L45/74 ,  H04L61/5014 ,  H04L61/251

CPC classification number: H04L12/4633 ,  H04L67/141 ,  H04L45/74 ,  H04L61/5014 ,  H04L61/251

Abstract: In one embodiment, a method includes acquiring an Internet Protocol version 6 (IPv6) address for a physical interface of a first network element. The method also includes configuring an Internet Protocol version 4 (IPv4) over IPv6 tunnel between the first network element and a second network element using the physical interface of the first network element. The method also includes acquiring an updated IPv6 address for the physical interface of the first network element and using an IPv6 Service Level Agreement (SLA) Hypertext Transfer Protocol (HTTP) operation to notify the second network element of the updated IPv6 address to establish a bidirectional IPv4 over IPv6 tunnel. The method further includes establishing a control connection with an IPv4 SD-WAN controller and automatically building an SD-WAN overlay tunnel with the bidirectional IPv4 over IPv6 tunnel as a transport.

公开(公告)号：US20230188492A1

公开(公告)日：2023-06-15

申请号：US17689051

申请日：2022-03-08

Applicant: Cisco Technology, Inc.

Inventor： Changhong Shen ,  Sampath Kumar ,  Ruozhong Xuan ,  Yin Wang ,  Madhu Gindi ,  Garima Pal ,  Vincent Li

IPC: H04L61/2514 ,  H04L9/40 ,  H04L101/659 ,  H04L101/35 ,  H04L45/748

CPC classification number: H04L61/2514 ,  H04L45/748 ,  H04L61/305 ,  H04L61/6059 ,  H04L63/0272

Abstract: In one embodiment, a method includes determining, by a router, a common prefix pool from a transport interface associated with a transport virtual private network (VPN). The method also includes identifying, by the router, a prefix associated with a service VPN and generating, by the router, an IPv6-to-IPv6 Network Address Translation (NAT66) prefix translation using the common prefix pool and the prefix. The NAT66 prefix translation includes a predetermined prefix length. The method further includes automatically installing, by the router, the NAT66 prefix translation into a translation table.

公开(公告)号：US20240414024A1

公开(公告)日：2024-12-12

申请号：US18808800

申请日：2024-08-19

Applicant: Cisco Technology, Inc.

Inventor： Changhong Shen ,  Ruozhong Xuan ,  Sampath Kumar Sthothra Bhasham ,  Vincent Li

IPC: H04L12/46 ,  H04L45/74 ,  H04L61/251 ,  H04L61/5014 ,  H04L67/141

Abstract: In one embodiment, a method includes acquiring an Internet Protocol version 6 (IPv6) address for a physical interface of a first network element. The method also includes configuring an Internet Protocol version 4 (IPv4) over IPv6 tunnel between the first network element and a second network element using the physical interface of the first network element. The method also includes acquiring an updated IPv6 address for the physical interface of the first network element and using an IPv6 Service Level Agreement (SLA) Hypertext Transfer Protocol (HTTP) operation to notify the second network element of the updated IPv6 address to establish a bidirectional IPv4 over IPv6 tunnel. The method further includes establishing a control connection with an IPv4 SD-WAN controller and automatically building an SD-WAN overlay tunnel with the bidirectional IPv4 over IPv6 tunnel as a transport.

公开(公告)号：US20240137335A1

公开(公告)日：2024-04-25

申请号：US18396214

申请日：2023-12-26

Applicant: Cisco Technology, Inc.

Inventor： Changhong Shen ,  Sampath Kumar ,  Ruozhong Xuan ,  Yin Wang ,  Madhu Gindi ,  Garima Pal ,  Vincent Li

IPC: H04L61/2514 ,  H04L9/40 ,  H04L45/748

CPC classification number: H04L61/2514 ,  H04L45/748 ,  H04L63/0272 ,  H04L2101/35

Abstract: In one embodiment, a method includes determining, by a router, a common prefix pool from a transport interface associated with a transport virtual private network (VPN). The method also includes identifying, by the router, a prefix associated with a service VPN and generating, by the router, an IPv6-to-IPv6 Network Address Translation (NAT66) prefix translation using the common prefix pool and the prefix. The NAT66 prefix translation includes a predetermined prefix length. The method further includes automatically installing, by the router, the NAT66 prefix translation into a translation table.

公开(公告)号：US11863515B2

公开(公告)日：2024-01-02

申请号：US17689051

申请日：2022-03-08

Applicant: Cisco Technology, Inc.

Inventor： Changhong Shen ,  Sampath Kumar ,  Ruozhong Xuan ,  Yin Wang ,  Madhu Gindi ,  Garima Pal ,  Vincent Li

IPC: H04L45/748 ,  H04L9/40 ,  H04L61/2514 ,  H04L101/35 ,  H04L101/659

CPC classification number: H04L61/2514 ,  H04L45/748 ,  H04L63/0272 ,  H04L2101/35 ,  H04L2101/659

Abstract: In one embodiment, a method includes determining, by a router, a common prefix pool from a transport interface associated with a transport virtual private network (VPN). The method also includes identifying, by the router, a prefix associated with a service VPN and generating, by the router, an IPv6-to-IPv6 Network Address Translation (NAT66) prefix translation using the common prefix pool and the prefix. The NAT66 prefix translation includes a predetermined prefix length. The method further includes automatically installing, by the router, the NAT66 prefix translation into a translation table.